Hi. Several months ago I tried to remove mask rom from the Yoshi's Island PCB (Japanese version) but that way I have ripped the solder pad for the pin 33. Today I have decided that I'd like to put the mask rom back while sodlering a piece of wire between the damaged pin of the mask rom and the GSU-2 chip. I had traced the solder pad and realized that it connects to pin 4 of the GSU-2.

Unfortunately all I get now is black screen. I have tried to resolder all connections but had no luck. Am I doing something wrong or maybe the mask rom us busted?

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